Improvement in steam-plows



llturn STATES PATENT. OFFICE.'

N. .A. GRAY, ()F CLEVELAND, OHIO.

IMPROVEMENT IN STEAM-PLOWS.

Specification forming part of Letters Patent No. 10,403, dated October 27, 1863..

To all whom it may concern:

Be it known that -I, N. A. GRAY, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented new and useful Improvements in Steam-Plot's; and I do hereby declare that the following is a full and complete description of the construction and operation of the same, reference being had to the accompanying drawings,1naking part of this specification, in which Figure 1 is atop view. Fig.2 is a side view.

' Fig. 3 is a rear end view, and Figs. 4 and 5 are detached portions.

Like letters refer to like parts in the several views.

The nature of my invention relates to the structure and adjustment of the blades or cutters, to the mode of operating them, to the structure of the compound crank, and to the construction and arrangement of the drag or harrow.

Arepresents a frame, which is supported upon driving-wheels B. The driving-wheels B are provided with cog-gears B, which connect with the pinions (J of the cog-wheel D. A shaft, D, connects the wheels "D D and pinions 0 O. The'wheels D D connect with and put in motion the pinions E E, which are situated upon the journals of the compound crank,

as shown atF. This compound crank (shown detached in Fig. 5) is composed of a number of iron disks, G, connected together by short journals H, which constitute the wrists, upon which the arms that carry the blades are sesecured. H, Fig. 4., represents one of these arms in section detached from the machine, and of which there are ten in all, and they are all duplicates of each other. The machine may beconstructed with more or less, as may be desired. The arms are connected to the wrists Hby means ofthe stud I, permanently attached to the crank end of the arm H, and forming half, of the journal-box. The forward half of the boxis formed by the shank of the blade K, which passes through a mortise in the arm H, and is secured in place by a key, L. The blades M are secured near the ends of the arms H by means of the shank passing through the arm and secured by a key, N. The arms H and stud I are of sufficient thickness to fill the space between the disks G. The forward end of the arms H are slotted, as seen at 0, Fig. 4, and rest upon a rod,P,running transversely across the machine, one end of which is shown at P, Fig. 2. The slot is of sufficient length to allow a complete revolution of the crank without drawing the arm from the rod P.

It will be observed by reference to Figs. 2, 3, and 5 that the wrists are placed between the disks in pairs, and so arranged that two sets of blades are forced into the ground at once, and so that the others will come in regular succession, one set beginning to rise as another set begins to descend, so that one-half are constautly'performing some part of their upward movement while the other half are on the descent, working thus in regular succes- SIOI].

The gear-wheels all moving in the direction of the arrows marked upon them, the motion of the blades is downward and backward, and consequently the power applied to them assists in propelling the machine forward.

The blades can be taken out at pleasure for sharpening by removing the keys N and L.

The depth to which the blades penetrate the ground is regulated by means of the gagewheels Q,-which can be set at any desired elevation by means ofan adjusting slot and bolt in the standard Q, and not shown in the drawings.

The boiler R and engine, by which locomotion is given to the machine, is supported upon,

truck-wheels S, and guided in any desired direction by means of the steering apparatus T, which consists of a pinion, U, upon each side of which is a rack-gear and rods T, extending forward and connecting with the axle-tree of the truck upon each side of the king-bolt, as shown in Fig. 1. By turning the wheel T in the direction indicated by the arrow the machine is turned to the right, and vice versa.

V V represent a series of rods, which extend backward and downward from the back end of the machine-frame, being long enough to reach the ground when placed at an angle of forty-five (45) degrees. The lower ends are turned downward at nearly right angles, as seen at V, the series constituting a drag or harrow. Each rod acts independently of the others, the upper ends being supported by a a hook or loop upon a transverse rod, W, upon the back end of the frame A.

Each rodis loaded with a sliding weight, W, which can be placed at any point between the upper end and the. angle V, for the purpose of causing greater or less pressure upon the ground. This drag can be removed at pleasme by unhookin g one end of the rod W, when all the bars V can be lifted off together.

I claim- 1. The arms H and blades K and M, when constructed and arranged substantially as specified.

2. The combination of the arms H, as constructed, with the compound crank,Fig. 5, as

cutter K, and wedge L, or their equivalents,

substantially as shown.

4; The drag V V, constructed and operating substantially as specified.

N. A. GRAY,

Witnesses:

W. H. BUB/RIDGE, HENRY Vo'rH. 

